engine INFINITI M35 2006 Factory Service Manual

DRIVE BELTS
EM-175
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Revision: 2006 January2006 M35/M45
3. Under the above condition, insert a metallic bar of approximately 6 mm (0.24 in) in diameter (hexagonal
bar wrench shown as example in the figure) through the holding boss to lock auto tensioner pulley arm.
Leave auto tensioner pulley arm locked until belt is installed again.
4. Remove alternator, water pump and A/C compressor belt.
Power Steering Oil Pump Belt
1. Remove air duct (inlet). Refer to EM-177, "AIR CLEANER AND AIR DUCT" .
2. Remove front engine undercover with power tool.
3. Remove alternator, water pump and A/C compressor belt. Refer to EM-174, "
Alternator, Water Pump and
A/C Compressor Belt" .
4. While securely holding the hexagonal protrusion part of auto
tensioner pulley with box wrench, move wrench handle in the
direction of arrow (loosening direction of tensioner).
CAUTION:
Avoid placing hand in a location where pinching may occur
if holding tool accidentally comes off.
5. Under the above condition, insert a metallic bar of approximately
6 mm (0.24 in) in diameter (hexagonal bar wrench shown as
example in the figure) through the holding boss to lock auto ten-
sioner pulley arm.
Leave auto tensioner pulley arm locked until belt is installed
again.
6. Remove power steering oil pump belt.
INSTALLATION
Note the following, and install in the reverse order of removal.
CAUTION:
Make sure belt is securely installed around all pulleys.
Make sure belt is correctly engaged with the pulley groove.
Check for engine oil and engine coolant are not adhered belt and pulley groove.
Make sure that belt tension is within the allowable working range, using indicator notch on auto
tensioner. Refer to EM-174, "
Checking Drive Belts" .
PBIC1543E

EM-176
[VK45DE]
DRIVE BELTS
Revision: 2006 January2006 M35/M45
ComponentsNBS004OO
CAUTION:
The complete drive belt auto tensioner must be replaced as a unit, including the pulley.
Drive Belt Auto Tensioner and Idler PulleyNBS004OP
REMOVAL
1. Remove air duct (inlet). Refer to EM-177, "AIR CLEANER AND AIR DUCT" .
2. Remove front engine undercover with power tool.
3. Remove drive belts. Refer to EM-174, "
Removal and Installation" .
Keep auto tensioner pulley arm locked after belt is removed.
4. Remove auto tensioner and idler pulley with power tool.
Keep auto tensioner pulley arm locked to install or remove auto tensioner.
CAUTION:
Do not loosen the hexagonal part in center of drive belt auto tensioner pulley (Do not turn it clock-
wise). If turned clockwise, the complete drive belt auto tensioner must be replaced as a unit,
including the pulley.
INSTALLATION
Installation is the reverse order of removal.
CAUTION:
Do not swap the pulley between new and old drive belt auto tensioner.
1.Auto tensioner (Used for alternator,
water pump and A/C compressor)2. Idler pulley 3.Auto tensioner (Used for power
steering oil pump belt)
PBIC2788E

AIR CLEANER AND AIR DUCT
EM-177
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Revision: 2006 January2006 M35/M45
AIR CLEANER AND AIR DUCTPFP:16500
ComponentsNBS004OQ
Refer to GI-11, "Components" for symbol marks in the figure.
Removal and InstallationNBS004OR
REMOVAL
1. Remove engine room cover (RH and LH). Refer to EM-173, "ENGINE ROOM COVER" .
2. Disconnect harness connector from mass air flow sensor.
3. Disconnect vacuum hose and PCV hose.
4. Remove air duct (inlet), air cleaner case and mass air flow sensor assembly, air duct and resonator
assembly disconnecting their joints.
Add marks as necessary for easier installation.
5. Remove mass air flow sensor from air cleaner case, as necessary.
CAUTION:
Handle mass air flow sensor with following cares.
Do not shock it.
Do not disassemble it.
Do not touch its sensor.
1. Air cleaner filter 2. Holder 3. Air duct (inlet)
4. Air cleaner case 5. Mounting rubber 6. Resonator
7. Mass air flow sensor 8. O-ring 9. Air duct and resonator assembly
10. Vacuum hose 11. PCV hose
A. To electric throttle control actuator B. To rocker cover (left bank) C. To VIAS control solenoid valve
PBIC3295E

EM-178
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AIR CLEANER AND AIR DUCT
Revision: 2006 January2006 M35/M45
6. Remove resonator in fender lifting front fender protector (LH). Refer to EI-20, "FENDER PROTECTOR" .
INSPECTION AFTER REMOVAL
Inspect air duct and resonator assembly for crack or tear.
If anything found, replace air duct and resonator assembly.
INSTALLATION
Note the following, and install in the reverse order of removal.
Align marks. Attach each joint. Screw clamps firmly.
Changing Air Cleaner FilterNBS004OS
REMOVAL
1. Remove engine room cover (LH). Refer to EM-173, "ENGINE ROOM COVER" .
2. Unhook clips (1) and remove holder (3) from air cleaner case
(2).
3. Remove air cleaner filter (2) from air cleaner case (1).
INSTALLATION
Note the following, and install in the reverse order of removal.
Install the air cleaner filter by aligning the seal with the notch of air cleaner case.
KBIA3584J
KBIA3585J

EM-180
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INTAKE MANIFOLD
Revision: 2006 January2006 M35/M45
Refer to GI-11, "Components" for symbol marks in the figure.
Removal and InstallationNBS004OU
REMOVAL
WAR NING :
To avoid the danger of being scalded, never drain the engine coolant when the engine is hot.
1. Remove engine room cover (RH and LH). Refer to EM-173, "
ENGINE ROOM COVER" .
2. Remove engine cover with power tool.
3. Release fuel pressure. Refer to EC-809, "
FUEL PRESSURE RELEASE" .
4. Remove air duct (inlet), air cleaner case and air duct and resonator assembly. Refer to EM-177, "
AIR
CLEANER AND AIR DUCT" .
5. Drain engine coolant from radiator. Refer to CO-40, "
DRAINING ENGINE COOLANT" .
CAUTION:
Perform this step when the engine is cold.
Do not spill engine coolant on drive belts.
1. PCV tube 2. PCV hose 3. PCV hose
4. Engine cover bracket (RH) 5.EVAP canister purge control sole-
noid valve6. EVAP hose
7. EVAP service port 8. EVAP tube 9. Vacuum hose
10. PCV hose 11. PCV tube 12. PCV hose
13. PCV hose 14. Vacuum hose 15. Vacuum hose
16. Vacuum tank 17. EVAP hose 18. Water hose
19. Intake manifold adapter 20. Gasket 21. Electric throttle control actuator
22. Gasket 23. Intake manifold (lower) 24. Gasket
25. Water hose 26. Engine cover bracket (LH) 27. Vacuum hose
28. Vacuum hose 29. Vacuum hose 30. Water hose
31. VIAS control solenoid valve 32. Vacuum hose 33. Intake manifold (upper)
34. Gasket
A. To centralized under-floor piping B. To rocker cover (right bank) C. To rocker cover (left bank)
D. To thermostat housing E. To air duct and resonator assembly F. To heater pipe
PBIC3365E

INTAKE MANIFOLD
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Revision: 2006 January2006 M35/M45
6. Disconnect fuel feed hose quick connector on engine side.
Refer to EM-193, "
FUEL INJECTOR AND FUEL TUBE" .
7. Remove fuel damper and fuel hose assembly. Refer to EM-193, "
FUEL INJECTOR AND FUEL TUBE" .
CAUTION:
While hoses are disconnected, plug them to prevent fuel from draining.
Do not separate fuel damper and fuel hose.
8. Remove or disconnect harnesses, engine cover bracket (RH and LH), vacuum hose, EVAP tube and hose
and PCV hose and tube from intake manifold (upper).
9. Loosen mounting bolts in reverse order as shown in the figure to
remove intake manifold (upper) with power tool.
10. Remove electric throttle control actuator as follows:
a. Disconnect harness connector.
b. Loosen mounting bolts diagonally.
CAUTION:
Handle carefully to avoid any shock to electric throttle control actuator.
Do not disassemble.
11. Remove fuel injector and fuel tube assembly. Refer to EM-193, "
FUEL INJECTOR AND FUEL TUBE" .
12. Disconnect water hoses from intake manifold adaptor.
13. Loosen mounting bolts in reverse order as shown in the figure to
remove intake manifold (lower) with power tool.
14. Remove intake manifold adaptor from intake manifold (lower).
15. Remove vacuum tank.
16. Remove intake manifold gaskets.
CAUTION:
Cover engine openings to avoid entry of foreign materials.
PBIC3828E
: Engine front
PBIC3297E
: Engine front
PBIC3298E

EM-182
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INTAKE MANIFOLD
Revision: 2006 January2006 M35/M45
INSPECTION AFTER REMOVAL
Surface Distortion
Check the surface distortion of both the intake manifold (upper
and lower) mating surfaces with straightedge and feeler gauge.
If it exceeds the limit, replace intake manifolds (lower and/or
upper).
INSTALLATION
Note the following, and install in the reverse order of removal.
Intake Manifold (Lower)
Tighten in numerical order as shown in the figure.
There are two types of mounting bolts. Refer to the following for
locating bolts.
Intake Manifold (Upper)
Tighten in numerical order as shown in the figure.
Electric Throttle Control Actuator
Install gasket with its directional protrusion set up/downward.
Tighten mounting bolts of electric throttle control actuator equally and diagonally in several steps.
After installation perform procedure in EM-182, "INSPECTION AFTER INSTALLATION" .
Water Hose
Insert hose by 27 to 32 mm (1.06 to 1.26 in) from connector end.
Vac u u m H ose
Refer to EC-833, "Vacuum Hose Drawing" .
INSPECTION AFTER INSTALLATION
Perform the “Throttle Valve Closed Position Learning” when harness connector of electric throttle control
actuator is disconnected. Refer to EC-806, "
Throttle Valve Closed Position Learning" .
Perform the “Idle Air Volume Learning” and “Throttle Valve Closed Position Learning” when electric throt-
tle control actuator is replaced. Refer to EC-807, "
Idle Air Volume Learning" . Limit : 0.1 mm (0.004 in)
PBIC0016E
: Engine front
M8 90 mm (3.54 in) : 7, 8
M8
35 mm (1.38 in) Except the above
PBIC3298E
: Engine front
PBIC3297E

EXHAUST MANIFOLD AND THREE WAY CATALYST
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Revision: 2006 January2006 M35/M45
EXHAUST MANIFOLD AND THREE WAY CATALYSTPFP:14004
ComponentsNBS004OV
Refer to GI-11, "Components" for symbol marks in the figure.
Removal and InstallationNBS004OW
REMOVAL
WAR NING :
Perform the work when the exhaust and cooling system have completely cooled down.
1. Remove engine room cover (RH and LH). Refer to EM-173, "
ENGINE ROOM COVER" .
2. Remove engine cover with power tool. Refer to EM-179, "
INTAKE MANIFOLD" .
3. Remove air duct (inlet), air cleaner case and air duct and resonator assembly. Refer to EM-177, "
AIR
CLEANER AND AIR DUCT" .
4. Remove front and rear engine undercovers with power tool.
1. Harness bracket 2. Exhaust manifold cover (right bank) 3.Exhaust manifold and three way cat-
alyst (right bank)
4. Air fuel ratio sensor 1 (bank 2) 5. Gasket 6. Harness bracket
7. Air fuel ratio sensor 1 (bank 1) 8.Exhaust manifold and three way cat-
alyst (left bank)9. Exhaust manifold cover (left bank)
PBIC3299E

EM-184
[VK45DE]
EXHAUST MANIFOLD AND THREE WAY CATALYST
Revision: 2006 January2006 M35/M45
5. Drain engine coolant from radiator. Refer to CO-40, "Changing Engine Coolant" .
CAUTION:
Perform this step when engine is cold.
Do not spill engine coolant on drive belts.
6. Remove radiator. Refer to CO-43, "
RADIATOR" .
7. Remove drive belts. Refer to EM-174, "
DRIVE BELTS" .
8. Remove exhaust front tube with power tool. Refer to EX-3, "
EXHAUST SYSTEM" .
9. Remove air fuel ratio sensor 1 as follows:
a. Disconnect harness connector of each air fuel ratio sensor 1.
b. Remove air fuel ratio sensor 1 on both bank with heated oxygen
sensor wrench (SST).
CAUTION:
Be careful not to damage air fuel ratio sensor 1.
Discard any air fuel ratio sensor 1 which has been
dropped onto a hard surface such as a concrete floor;
replace with a new one.
10. Remove exhaust manifold and three way catalyst (left bank) as follows:
a. Disconnect A/C piping from A/C compressor, then remove A/C compressor with power tool. Refer to AT C -
151, "REFRIGERANT LINES" .
b. Remove steering lower joint to enable steering shaft to move freely. Refer to PS-13, "
STEERING COL-
UMN" .
c. Remove starter motor. Refer to SC-10, "
STARTING SYSTEM" .
d. Remove nuts on bottom of engine mounting insulator (LH), and lift up left side of engine approximately 3
cm (1.18 in) with transmission jack. Refer to EM-244, "
ENGINE ASSEMBLY" .
e. Remove exhaust manifold cover (left bank).
f. Loosen nuts in the reverse order of figure to remove exhaust
manifold and three way catalyst (left bank) with power tool.
NOTE:
Disregard No. 9 to No. 12 when loosening.
11. Remove exhaust manifold and three way catalyst (right bank) as follows:
a. Remove alternator and bracket. Refer to SC-23, "
CHARGING SYSTEM" .
PBIC2333E
A : Left bank
B : Right bank
: Engine front
PBIC3300E

EXHAUST MANIFOLD AND THREE WAY CATALYST
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Revision: 2006 January2006 M35/M45
b. Remove nuts on bottom of engine mounting insulator (RH), and lift up right side of engine approximately 3
cm (1.18 in) with transmission jack. Refer to EM-244, "
ENGINE ASSEMBLY" .
c. Remove exhaust manifold cover (right bank).
d. Loosen nuts in the reverse order of figure to remove exhaust
manifold and three way catalyst (right bank) with power tool.
NOTE:
Disregard No. 9 to No. 12 when loosening.
12. Remove exhaust manifold gaskets.
CAUTION:
Cover engine openings to avoid entry of foreign materials.
INSPECTION AFTER REMOVAL
Surface Distortion
Check the surface distortion of the each exhaust manifold flange
mating surface with straightedge and feeler gauge.
If it exceeds the limit, replace exhaust manifold and three way
catalyst.
INSTALLATION
Note the following, and install in the reverse order of removal.
A : Left bank
B : Right bank
: Engine front
PBIC3300E
Limit : 0.3 mm (0.012 in)
PBIC1550E